Picosecond, tunable, high-brightness hard x-ray inverse Compton source at Duke storage ring

1995 ◽  
Author(s):  
Vladimir N. Litvinenko ◽  
Ying Wu ◽  
Bentley Burnham ◽  
Genevieve A. Barnett ◽  
John M. J. Madey
Keyword(s):  
Storage Ring ◽  
High Brightness ◽  
X Ray ◽  
Inverse Compton

PRODUCTION OF FEMTOSECOND PULSES AND MICRON BEAM SPOTS FOR HIGH BRIGHTNESS ELECTRON BEAM APPLICATIONS

2007 ◽  
Vol 22 (22) ◽  
pp. 3726-3735
Author(s):  
S. G. ANDERSON ◽  
D. J. GIBSON ◽  
F. V. HARTEMANN ◽  
J. S. JACOB ◽  
A. M. TREMAINE ◽  
...  
Keyword(s):  
Electron Beam ◽  
Electron Beams ◽  
Beam Radiation ◽  
High Brightness ◽  
X Ray ◽  
Inverse Compton Scattering ◽  
Inverse Compton ◽  
Strong Focusing ◽  
Moderate Energy ◽  
Low Emittance

Current and future applications of high brightness electron beams, which include advanced accelerators and beam-radiation interactions require both transverse and longitudinal beam sizes on the order of tens of microns. Ultra-high density beams may be produced at moderate energy (50 MeV) by compression and subsequent strong focusing of low emittance, photoinjector sources. We describe the implementation of this method used at the PLEIADES inverse-Compton scattering (ICS) x-ray source at LLNL in which the photoinjector-generated beam has been compressed to 300 fsec rms duration using the velocity bunching technique and focused to 20 μm rms size using an extremely high gradient, permanent magnet quadrupole focusing system.

scholarly journals The HEPS project

2018 ◽  
Vol 25 (6) ◽  
pp. 1611-1618 ◽  
Author(s):  
Yi Jiao ◽  
Gang Xu ◽  
Xiao-Hao Cui ◽  
Zhe Duan ◽  
Yuan-Yuan Guo ◽  
...  
Keyword(s):  
Storage Ring ◽  
High Energy ◽  
High Energy Photon ◽  
Energy Photon ◽  
High Brightness ◽  
X Ray ◽  
Longitudinal Gradients ◽  
Beijing China ◽  
Photon Source ◽  
Central Slice

The High Energy Photon Source (HEPS), a 6 GeV green-field diffraction-limited storage ring light source, will be built in Beijing, China. The HEPS design has been evolving for about ten years, and is now mostly finished and ready for construction. The storage ring is based on a modified hybrid seven-bend achromat (7BA) design, where bending magnets with reverse bending angles and longitudinal gradients are adopted to reach an ultralow natural emittance of 34.2 pm with a circumference of 1360.4 m. The central slice of the dipole in the middle of the modified hybrid 7BA, with flexible magnetic field, is used as the source of the bending-magnet beamline. Moreover, alternating high- and low-beta sections are specially designed to generate and deliver X-ray synchrotron radiation with high brightness of 5 × 1022 photons s−1 mm−2 mrad−2 (0.1% bandwidth)−1. Here, the HEPS storage ring design and solutions to the challenges inherent in this ultralow-emittance design are presented.

X-Ray absorption edge elemental imaging of B. thuringienis

1989 ◽  
Vol 47 ◽  
pp. 212-213
Author(s):  
R. L. Stears
Keyword(s):  
Absorption Edge ◽  
Elemental Distribution ◽  
X Rays ◽  
Differential Absorption ◽  
Synchrotron Source ◽  
High Brightness ◽  
X Ray ◽  
Elemental Imaging ◽  
Cellular Integrity ◽  
X Ray Absorption

Because of the nature of the bacterial endospore, little work has been done on analyzing their elemental distribution and composition in the intact, living, hydrated state. The majority of the qualitative analysis entailed intensive disruption and processing of the endospores, which effects their cellular integrity and composition.Absorption edge imaging permits elemental analysis of hydrated, unstained specimens at high resolution. By taking advantage of differential absorption of x-ray photons in regions of varying elemental composition, and using a high brightness, tuneable synchrotron source to obtain monochromatic x-rays, contact x-ray micrographs can be made of unfixed, intact endospores that reveal sites of elemental localization. This study presents new data demonstrating the application of x-ray absorption edge imaging to produce elemental information about nitrogen (N) and calcium (Ca) localization using Bacillus thuringiensis as the test specimen.

scholarly journals Free-electron laser inverse-Compton interaction x-ray source

2019 ◽  
Vol 22 (4) ◽  
Author(s):  
Pardis Niknejadi ◽  
Jeremy M. D. Kowalczyk ◽  
Michael R. Hadmack ◽  
Bryce T. Jacobson ◽  
Ian Howe ◽  
...  
Keyword(s):  
Free Electron ◽  
Free Electron Laser ◽  
X Ray ◽  
Inverse Compton

scholarly journals Author Correction: High-brightness self-seeded X-ray free-electron laser covering the 3.5 keV to 14.6 keV range

2021 ◽  
Author(s):  
Inhyuk Nam ◽  
Chang-Ki Min ◽  
Bonggi Oh ◽  
Gyujin Kim ◽  
Donghyun Na ◽  
...  
Keyword(s):  
Free Electron ◽  
Free Electron Laser ◽  
High Brightness ◽  
X Ray

SUMMARY OF WORKING GROUP 4: APPLICATIONS OF HIGH BRIGHTNESS BEAMS TO ADVANCED ACCELERATORS AND LIGHTS SOURCES

2007 ◽  
Vol 22 (23) ◽  
pp. 4265-4269
Author(s):  
MITSURU UESAKA ◽  
ANDREA ROSSI
Keyword(s):  
Compton Scattering ◽  
Working Group ◽  
High Brightness ◽  
X Ray ◽  
Group 4 ◽  
Wakefield Acceleration ◽  
Plasma Wakefield

We categorized 16 contributions into the three sub-fields. Those are 1. Compton scattering X-ray sources, 2. FEL and RF photoinjectors and 3. Plasma wakefield acceleration/innovative acceleration schemes. We performed a half day working group for each sub-field. The titles and summaries of the contributions appear in the article.

scholarly journals Development of a source of femtosecond X-ray pulses based on the electron storage ring

2003 ◽  
Author(s):  
A. Zholents ◽  
J. Byrd ◽  
S. Chattopadhyay ◽  
H. Chong ◽  
T.E. Glover ◽  
...  
Keyword(s):  
Storage Ring ◽  
Electron Storage ◽  
X Ray
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